Method for Treating Water Within a Sequencing Batch Reactor, Including an In-Line Measurement of the Nitrite Concentration
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
Oct 18, 2011
filing date -
Oct 18, 2010
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Abstract
A method for treating water laden with nitrogen in the form of ammonium within a sequencing batch reactor, said method including: a first step of feeding said water into said sequencing batch reactor; an aerated nitritation step); an anoxic denitritation step; and a step of extracting treated water from said reactor. The method further includes an in-line measurement of the nitrite concentration of said water in said reactor, a step of measuring the pH of said water contained in said reactor, a step of determining information that is representative of the nitrous-acid (HNO2) concentration of said water contained in said reactor on the basis of said in-line measurement of the nitrite concentration and said pH measurement, and a step of controlling the duration of said aerated nitritation process in accordance with said nitrous-acid concentration.
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